The pension fund for Transport for London, the Government body in charge of
the capital's giant transport network, is putting more of its money into
hedge funds.

TfL's fund is in the final stages of investing with hedge funds Och-Ziff Capital Management and Arrowgrass Capital Partners, and is set to boost its holding with Bridgewater Associates, the world's largest hedge fund, TfL's investment officer Padmesh Shukla told Reuters.

The move reflects a plan by TfL, responsible for London's public trains, trams, buses, bicycle system and the London Underground, to invest a quarter of its cash in so-called alternative assets, including hedge funds.

In doing so, the £6bn scheme joins the pension funds of the Church of England and particle physics laboratory CERN by hiking its investment in the secretive world of hedge funds.

Conservative investors such as pension funds are keen to diversify away from traditional asset classes like stocks and bonds.

"Trustees have decided to increase the exposure to alternatives, including hedge funds, to improve the Fund's risk-adjusted returns," Shukla said.

TfL has chosen some of the biggest - and wealthiest - names in the industry.

Connecticut-based Bridgewater is headed by Ray Dalio, who is worth $10bn (£6.2bn), according to Forbes. Daniel Och, a former Goldman Sachs trader and founder of Och-Ziff, has $2.3bn in assets.

The pension fund also recently put money into Gresham Investment Management, a commodities fund, and decided to reduce its allocation to Guernsey-headquartered BlueCrest Capital Management after shifting money out of its AllBlue fund and into its International and Trend portfolios, Shukla said.

BlueCrest was founded by Michael Platt, worth 650 million pounds, according to the Sunday Times "Rich List".

Shukla did not disclose the size of the planned allocations.

According to the fund's 2012 annual report, TfL had 12pc of its assets invested in alternative assets - which include hedge funds - for the year to the end of March, up from 10.1pc a year earlier.

The fund's biggest investment is in overseas equities, which make up 40.4pc of its assets. Some 16.5pc of the money is in UK government bonds and 15pc in UK stocks.

TfL, created after taking over from predecessor London Regional Transport in 2000, is controlled by a board chaired by Mayor of London Boris Johnson.

Its pension scheme covers almost 83,000 current and former employees. According to the most recent funding valuation, dated March 31 2009, the scheme's assets were £1.2bn less than the amount it expects to have to pay out.